Compact Design: This ultra-compact desktop diffuser is small enough to fit on any surface with its 200ml water capacity and USB powered operation. | Aroma Therapy: Simply add a few drops of your favorite essential oils to the water and let the ultrasonic vibrations fill the air with a pleasant scent. | Color Changing Light: Seven changing color LED lights provide a soothing ambient glow while the diffuser is operating. | Convenient USB Power: No need for batteries or power cords, just plug the USB cable into any computer or wall adapter to use. | Whisper Quiet Operation: The ultrasonic diffuser works silently so you can enjoy aromatherapy without any distracting noise.